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Diffstat (limited to 'src/datavisualization/engine/qabstract3dgraph.cpp')
| -rw-r--r-- | src/datavisualization/engine/qabstract3dgraph.cpp | 512 |
1 files changed, 512 insertions, 0 deletions
diff --git a/src/datavisualization/engine/qabstract3dgraph.cpp b/src/datavisualization/engine/qabstract3dgraph.cpp new file mode 100644 index 00000000..d8146149 --- /dev/null +++ b/src/datavisualization/engine/qabstract3dgraph.cpp @@ -0,0 +1,512 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc +** All rights reserved. +** For any questions to Digia, please use contact form at http://qt.digia.com +** +** This file is part of the QtDataVisualization module. +** +** Licensees holding valid Qt Enterprise licenses may use this file in +** accordance with the Qt Enterprise License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. +** +** If you have questions regarding the use of this file, please use +** contact form at http://qt.digia.com +** +****************************************************************************/ + +#include "qabstract3dgraph.h" +#include "qabstract3dgraph_p.h" +#include "abstract3dcontroller_p.h" +#include "qabstract3dinputhandler_p.h" +#include "q3dscene_p.h" +#include "qutils.h" + +#include <QGuiApplication> +#include <QOpenGLContext> +#include <QOpenGLPaintDevice> +#include <QPainter> + + +QT_BEGIN_NAMESPACE_DATAVISUALIZATION + +/*! + * \class QAbstract3DGraph + * \inmodule QtDataVisualization + * \brief The QAbstract3DGraph class provides a window and render loop for graphs. + * \since Qt Data Visualization 1.0 + * + * This class subclasses a QWindow and provides render loop for graphs inheriting it. + * + * You should not need to use this class directly, but one of its subclasses instead. + * + * Anti-aliasing is turned on by default on C++, except in OpenGL ES2 + * environments, where anti-aliasing is not supported by Qt Data Visualization. + * To specify non-default anti-aliasing for a graph, give a custom surface format as + * a constructor parameter. You can use the convenience function \c QtDataVisualization::qDefaultSurfaceFormat() + * to create the surface format object. + * + * \note QAbstract3DGraph sets window flag \c Qt::FramelessWindowHint on by default. If you want to display + * graph windows as standalone windows with regular window frame, clear this flag after constructing + * the graph. For example: + * + * \code + * Q3DBars *graphWindow = new Q3DBars; + * graphWindow->setFlags(graphWindow->flags() ^ Qt::FramelessWindowHint); + * \endcode + * + * \sa Q3DBars, Q3DScatter, Q3DSurface, {Qt Data Visualization C++ Classes} + */ + +/*! + \enum QAbstract3DGraph::SelectionFlag + + Item selection modes. Values of this enumeration can be combined with OR operator. + + \value SelectionNone + Selection mode disabled. + \value SelectionItem + Selection highlights a single item. + \value SelectionRow + Selection highlights a single row. + \value SelectionItemAndRow + Combination flag for highlighting both item and row with different colors. + \value SelectionColumn + Selection highlights a single column. + \value SelectionItemAndColumn + Combination flag for highlighting both item and column with different colors. + \value SelectionRowAndColumn + Combination flag for highlighting both row and column. + \value SelectionItemRowAndColumn + Combination flag for highlighting item, row, and column. + \value SelectionSlice + Setting this mode flag indicates that the graph should take care of the slice view handling + automatically. If you wish to control the slice view yourself via Q3DScene, do not set this + flag. When setting this mode flag, either \c SelectionRow or \c SelectionColumn must also + be set, but not both. Slicing is supported by Q3DBars and Q3DSurface only. + \value SelectionMultiSeries + Setting this mode means that items for all series at same position are highlighted, instead + of just the selected item. The actual selection in the other series doesn't change. + Multi-series selection is only supported for Q3DBars. +*/ + +/*! + \enum QAbstract3DGraph::ShadowQuality + + Quality of shadows. + + \value ShadowQualityNone + Shadows are disabled. + \value ShadowQualityLow + Shadows are rendered in low quality. + \value ShadowQualityMedium + Shadows are rendered in medium quality. + \value ShadowQualityHigh + Shadows are rendered in high quality. + \value ShadowQualitySoftLow + Shadows are rendered in low quality with softened edges. + \value ShadowQualitySoftMedium + Shadows are rendered in medium quality with softened edges. + \value ShadowQualitySoftHigh + Shadows are rendered in high quality with softened edges. +*/ + +/*! + * \internal + */ +QAbstract3DGraph::QAbstract3DGraph(QAbstract3DGraphPrivate *d, const QSurfaceFormat *format, + QWindow *parent) + : QWindow(parent), + d_ptr(d) +{ + qRegisterMetaType<QAbstract3DGraph::ShadowQuality>("QAbstract3DGraph::ShadowQuality"); + + // Default to frameless window, as typically graphs are not toplevel + setFlags(flags() | Qt::FramelessWindowHint); + + QSurfaceFormat surfaceFormat; + if (format) { + surfaceFormat = *format; + // Make sure renderable type is correct +#if !defined(QT_OPENGL_ES_2) + surfaceFormat.setRenderableType(QSurfaceFormat::OpenGL); +#else + surfaceFormat.setRenderableType(QSurfaceFormat::OpenGLES); +#endif + } else { + surfaceFormat = qDefaultSurfaceFormat(); + } + + d_ptr->m_context = new QOpenGLContext(this); + setSurfaceType(QWindow::OpenGLSurface); + setFormat(surfaceFormat); + + create(); + + d_ptr->m_context->setFormat(requestedFormat()); + d_ptr->m_context->create(); + d_ptr->m_context->makeCurrent(this); + + initializeOpenGLFunctions(); + + const GLubyte *shaderVersion = glGetString(GL_SHADING_LANGUAGE_VERSION); +#ifndef QT_NO_DEBUG + const GLubyte *openGLVersion = glGetString(GL_VERSION); + qDebug() << "OpenGL version:" << (const char *)openGLVersion; + qDebug() << "GLSL version:" << (const char *)shaderVersion; +#endif + +#if !defined(QT_OPENGL_ES_2) + // If we have real OpenGL, GLSL version must be 1.2 or over. Quit if not. + QStringList splitversionstr = QString::fromLatin1((const char *)shaderVersion).split(QChar::fromLatin1(' ')); + if (splitversionstr[0].toFloat() < 1.2) + qFatal("GLSL version must be 1.20 or higher. Try installing latest display drivers."); +#else + Q_UNUSED(shaderVersion) +#endif + + d_ptr->renderLater(); +} + +/*! + * Destroys QAbstract3DGraph. + */ +QAbstract3DGraph::~QAbstract3DGraph() +{ +} + +/*! + * Adds the given \a inputHandler to the graph. The input handlers added via addInputHandler + * are not taken in to use directly. Only the ownership of the \a inputHandler is given to the graph. + * The \a inputHandler must not be null or already added to another graph. + * + * \sa releaseInputHandler(), setActiveInputHandler() + */ +void QAbstract3DGraph::addInputHandler(QAbstract3DInputHandler *inputHandler) +{ + d_ptr->m_visualController->addInputHandler(inputHandler); +} + +/*! + * Releases the ownership of the \a inputHandler back to the caller, if it was added to this graph. + * If the released \a inputHandler is in use there will be no input handler active after this call. + * + * If the default input handler is released and added back later, it behaves as any other input handler would. + * + * \sa addInputHandler(), setActiveInputHandler() + */ +void QAbstract3DGraph::releaseInputHandler(QAbstract3DInputHandler *inputHandler) +{ + d_ptr->m_visualController->releaseInputHandler(inputHandler); +} + +/*! + * \property QAbstract3DGraph::activeInputHandler + * + * The active \a inputHandler used in the graph. Implicitly calls addInputHandler() to transfer + * ownership of the \a inputHandler to this graph. + * + * If the \a inputHandler is null, no input handler will be active after this call. + * + * \sa addInputHandler(), releaseInputHandler() + */ +void QAbstract3DGraph::setActiveInputHandler(QAbstract3DInputHandler *inputHandler) +{ + d_ptr->m_visualController->setActiveInputHandler(inputHandler); +} + +QAbstract3DInputHandler *QAbstract3DGraph::activeInputHandler() +{ + return d_ptr->m_visualController->activeInputHandler(); +} + +/*! + * \return list of all added input handlers. + * + * \sa addInputHandler() + */ +QList<QAbstract3DInputHandler *> QAbstract3DGraph::inputHandlers() const +{ + return d_ptr->m_visualController->inputHandlers(); +} + +/*! + * Adds the given \a theme to the graph. The themes added via addTheme are not taken in to use + * directly. Only the ownership of the a\ theme is given to the graph. + * The \a theme must not be null or already added to another graph. + * + * \sa releaseTheme(), setActiveTheme() + */ +void QAbstract3DGraph::addTheme(Q3DTheme *theme) +{ + d_ptr->m_visualController->addTheme(theme); +} + +/*! + * Releases the ownership of the \a theme back to the caller, if it was added to this graph. + * If the released \a theme is in use, a new default theme will be created and set active. + * + * If the default theme is released and added back later, it behaves as any other theme would. + * + * \sa addTheme(), setActiveTheme() + */ +void QAbstract3DGraph::releaseTheme(Q3DTheme *theme) +{ + d_ptr->m_visualController->releaseTheme(theme); +} + +/*! + * \property QAbstract3DGraph::activeTheme + * + * The active \a theme to be used for the graph. Implicitly calls addTheme() to transfer ownership + * of the \a theme to this graph. + * If the \a theme is null, a temporary default theme is created. This temporary theme is destroyed + * if any theme is explicitly set later. + * Properties of the \a theme can be modified even after setting it, and the modifications take + * effect immediately. + */ +void QAbstract3DGraph::setActiveTheme(Q3DTheme *theme) +{ + d_ptr->m_visualController->setActiveTheme(theme); +} + + +Q3DTheme *QAbstract3DGraph::activeTheme() const +{ + return d_ptr->m_visualController->activeTheme(); +} + +/*! + * \return list of all added themes. + * + * \sa addTheme() + */ +QList<Q3DTheme *> QAbstract3DGraph::themes() const +{ + return d_ptr->m_visualController->themes(); +} + +/*! + * \property QAbstract3DGraph::selectionMode + * + * Sets selection \a mode to a combination of SelectionFlags. It is preset to + * \c SelectionItem by default. + * Different graph types support different selection modes. See SelectionFlags + * documentation for details. + */ +void QAbstract3DGraph::setSelectionMode(SelectionFlags mode) +{ + d_ptr->m_visualController->setSelectionMode(mode); +} + +QAbstract3DGraph::SelectionFlags QAbstract3DGraph::selectionMode() const +{ + return d_ptr->m_visualController->selectionMode(); +} + +/*! + * \property QAbstract3DGraph::shadowQuality + * + * Sets shadow \a quality to one of ShadowQuality. It is preset to + * \c ShadowQualityMedium by default. + * + * \note If setting ShadowQuality of a certain level fails, a level is lowered + * until it is successful and shadowQualityChanged signal is emitted for each time the change is + * done. + */ +void QAbstract3DGraph::setShadowQuality(ShadowQuality quality) +{ + d_ptr->m_visualController->setShadowQuality(quality); +} + +QAbstract3DGraph::ShadowQuality QAbstract3DGraph::shadowQuality() const +{ + return d_ptr->m_visualController->shadowQuality(); +} + +/*! + * \property QAbstract3DGraph::scene + * + * This property contains the read only Q3DScene that can be used to access for example a camera object. + */ +Q3DScene *QAbstract3DGraph::scene() const +{ + return d_ptr->m_visualController->scene(); +} + +/*! + * Clears selection from all attached series. + */ +void QAbstract3DGraph::clearSelection() +{ + d_ptr->m_visualController->clearSelection(); +} + +/*! + * \internal + */ +bool QAbstract3DGraph::event(QEvent *event) +{ + switch (event->type()) { + case QEvent::UpdateRequest: + d_ptr->renderNow(); + return true; + case QEvent::TouchBegin: + case QEvent::TouchCancel: + case QEvent::TouchUpdate: + case QEvent::TouchEnd: + d_ptr->m_visualController->touchEvent(static_cast<QTouchEvent *>(event)); + return true; + default: + return QWindow::event(event); + } +} + +/*! + * \internal + */ +void QAbstract3DGraph::resizeEvent(QResizeEvent *event) +{ + Q_UNUSED(event); + + Q3DScene *scene = d_ptr->m_visualController->scene(); + scene->d_ptr->setWindowSize(QSize(width(), height())); + scene->d_ptr->setViewport(QRect(0, 0, width(), height())); +} + +/*! + * \internal + */ +void QAbstract3DGraph::exposeEvent(QExposeEvent *event) +{ + Q_UNUSED(event); + + if (isExposed()) + d_ptr->renderNow(); +} + +/*! + * \internal + */ +void QAbstract3DGraph::mouseDoubleClickEvent(QMouseEvent *event) +{ + d_ptr->m_visualController->mouseDoubleClickEvent(event); +} + +/*! + * \internal + */ +void QAbstract3DGraph::touchEvent(QTouchEvent *event) +{ + d_ptr->m_visualController->touchEvent(event); +} + +/*! + * \internal + */ +void QAbstract3DGraph::mousePressEvent(QMouseEvent *event) +{ + d_ptr->m_visualController->mousePressEvent(event, event->pos()); +} + +/*! + * \internal + */ +void QAbstract3DGraph::mouseReleaseEvent(QMouseEvent *event) +{ + d_ptr->m_visualController->mouseReleaseEvent(event, event->pos()); +} + +/*! + * \internal + */ +void QAbstract3DGraph::mouseMoveEvent(QMouseEvent *event) +{ + d_ptr->m_visualController->mouseMoveEvent(event, event->pos()); +} + +/*! + * \internal + */ +void QAbstract3DGraph::wheelEvent(QWheelEvent *event) +{ + d_ptr->m_visualController->wheelEvent(event); +} + +QAbstract3DGraphPrivate::QAbstract3DGraphPrivate(QAbstract3DGraph *q) + : QObject(0), + q_ptr(q), + m_updatePending(false), + m_visualController(0), + m_devicePixelRatio(1.f) +{ +} + +QAbstract3DGraphPrivate::~QAbstract3DGraphPrivate() +{ + delete m_visualController; +} + +void QAbstract3DGraphPrivate::setVisualController(Abstract3DController *controller) +{ + m_visualController = controller; + + QObject::connect(m_visualController, &Abstract3DController::activeInputHandlerChanged, q_ptr, + &QAbstract3DGraph::activeInputHandlerChanged); + QObject::connect(m_visualController, &Abstract3DController::activeThemeChanged, q_ptr, + &QAbstract3DGraph::activeThemeChanged); + QObject::connect(m_visualController, &Abstract3DController::selectionModeChanged, q_ptr, + &QAbstract3DGraph::selectionModeChanged); + QObject::connect(m_visualController, &Abstract3DController::shadowQualityChanged, q_ptr, + &QAbstract3DGraph::shadowQualityChanged); + QObject::connect(m_visualController, &Abstract3DController::needRender, this, + &QAbstract3DGraphPrivate::renderLater); + + QObject::connect(m_visualController, &Abstract3DController::axisXChanged, this, + &QAbstract3DGraphPrivate::handleAxisXChanged); + QObject::connect(m_visualController, &Abstract3DController::axisYChanged, this, + &QAbstract3DGraphPrivate::handleAxisYChanged); + QObject::connect(m_visualController, &Abstract3DController::axisZChanged, this, + &QAbstract3DGraphPrivate::handleAxisZChanged); +} + +void QAbstract3DGraphPrivate::handleDevicePixelRatioChange() +{ + if (q_ptr->devicePixelRatio() == m_devicePixelRatio || !m_visualController) + return; + + m_devicePixelRatio = q_ptr->devicePixelRatio(); + m_visualController->scene()->setDevicePixelRatio(m_devicePixelRatio); +} + +void QAbstract3DGraphPrivate::render() +{ + handleDevicePixelRatioChange(); + m_visualController->synchDataToRenderer(); + m_visualController->render(); +} + +void QAbstract3DGraphPrivate::renderLater() +{ + if (!m_updatePending) { + m_updatePending = true; + QCoreApplication::postEvent(q_ptr, new QEvent(QEvent::UpdateRequest)); + } +} + +void QAbstract3DGraphPrivate::renderNow() +{ + if (!q_ptr->isExposed()) + return; + + m_updatePending = false; + + m_context->makeCurrent(q_ptr); + + render(); + + m_context->swapBuffers(q_ptr); +} + +QT_END_NAMESPACE_DATAVISUALIZATION |